Heater



FIG. 1 is a perspective view of a heater showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is another perspective view from the bottom thereof.

The broken lines in the figure drawings are for the purpose of illustrating portions of the heater and form no part of the claimed design. 

CLAIM The ornamental design for a heater, as shown. 